I have to agree Mogwa, I have been removing Norton and McAfee from friends PCs for the last three or four years.  Even on a high spec machine they have a major impact.

Start Task Manager just after startup and watch the processor climb to 100% and stay high for a very long time.   I use AVG on all my machines.

Windows 7 has a much faster start up than XP by the way

 

 

 

I use Poser 13 on Windows 11 - For Scene set up I use a Geekcom A5 -  Ryzen 9 5900HX, with 64 gig ram and 3 TB  storage, mini PC with final rendering done on normal sized desktop using an AMD Ryzen Threadipper 1950X CPU, Corsair Hydro H100i CPU cooler, 3XS EVGA GTX 1080i SC with 11g Ram, 4 X 16gig Corsair DDR4 Ram and a Corsair RM 100 PSU .   The desktop is in a remote location with rendering done via Queue Manager which gives me a clearer desktop and quieter computer room.